package com.zhxt.web.controller.system;

import java.util.List;

import com.zhxt.common.constant.HttpStatus;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringEscapeUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.zhxt.common.annotation.Log;
import com.zhxt.common.constant.UserConstants;
import com.zhxt.common.core.controller.BaseController;
import com.zhxt.common.core.domain.AjaxResult;
import com.zhxt.common.core.domain.entity.SysDept;
import com.zhxt.common.enums.BusinessType;
import com.zhxt.common.utils.StringUtils;
import com.zhxt.system.service.ISysDeptService;

/**
 * 部门信息
 *
 * @author zhxt
 */
@RestController
@RequestMapping("/system/dept")
public class SysDeptController extends BaseController {
    @Autowired
    private ISysDeptService deptService;

    /**
     * 获取部门列表
     */
    @PreAuthorize("@ss.hasPermi('system:dept:list')")
    @GetMapping("/list")
    public AjaxResult list(SysDept dept) {
        if (dept == null) {
            return new AjaxResult();
        }
        List<SysDept> depts = deptService.selectDeptList(dept);
        return success(depts);
    }

    /**
     * 查询部门列表（排除节点）
     */
    @PreAuthorize("@ss.hasPermi('system:dept:list')")
    @GetMapping("/list/exclude/{deptId}")
    public AjaxResult excludeChild(@PathVariable(value = "deptId", required = false) Long deptId) {
        List<SysDept> depts = deptService.selectDeptList(new SysDept());
        if (depts != null) {
            depts.removeIf(d -> d.getDeptId().intValue() == deptId || ArrayUtils.contains(StringUtils.split(d.getAncestors(), ","), deptId + ""));

        }
        return success(depts);
    }

    /**
     * 根据部门编号获取详细信息
     */
    @PreAuthorize("@ss.hasPermi('system:dept:query')")
    @GetMapping(value = "/{deptId}")
    public AjaxResult getInfo(@PathVariable Long deptId) {
        if (deptId == null) {
            return new AjaxResult();
        }
        deptService.checkDeptDataScope(deptId);
        return success(deptService.selectDeptById(deptId));
    }

    /**
     * 新增部门
     */
    @PreAuthorize("@ss.hasPermi('system:dept:add')")
    @Log(title = "部门管理", businessType = BusinessType.INSERT)
    @PostMapping
    public AjaxResult add(@Validated @RequestBody SysDept dept) {
        if (dept == null || StringUtils.isEmpty(dept.getDeptName())) {
            return AjaxResult.error("部门名称不能为空");
        }
        String checkResult = deptService.checkDeptNameUnique(dept);
        if (UserConstants.NOT_UNIQUE.equals(checkResult)) {
            return AjaxResult.error("新增部门'" + StringEscapeUtils.escapeHtml4(dept.getDeptName()) + "'失败，部门名称已存在");
        }
        dept.setCreateBy(getUsername());
        return AjaxResult.success(deptService.insertDept(dept));
    }

    /**
     * 修改部门
     */
    @PreAuthorize("@ss.hasPermi('system:dept:edit')")
    @Log(title = "部门管理", businessType = BusinessType.UPDATE)
    @PostMapping("/edit")
    public AjaxResult edit(@Validated @RequestBody SysDept dept) {
        if (dept == null || dept.getDeptId() == null) {
            return AjaxResult.error("参数错误");
        }
        Long deptId = dept.getDeptId();
        deptService.checkDeptDataScope(deptId);

        if (UserConstants.NOT_UNIQUE.equals(deptService.checkDeptNameUnique(dept))) {
            return AjaxResult.error("修改部门'" + StringEscapeUtils.escapeHtml4(dept.getDeptName()) + "'失败，部门名称已存在");
        }
        if (dept.getParentId().equals(deptId)) {
            return AjaxResult.error("修改部门'" + StringEscapeUtils.escapeHtml4(dept.getDeptName()) + "'失败，上级部门不能是自己");
        }
        if (StringUtils.equals(UserConstants.DEPT_DISABLE, dept.getStatus()) && deptService.selectNormalChildrenDeptById(deptId) > 0) {
            return AjaxResult.error("该部门包含未停用的子部门！");
        }

        dept.setUpdateBy(getUsername());
        int result = deptService.updateDept(dept);
        return result > 0 ? AjaxResult.success() : AjaxResult.error("修改部门失败");
    }



    /**
     * 删除部门
     */
    @PreAuthorize("@ss.hasPermi('system:dept:remove')")
    @Log(title = "部门管理", businessType = BusinessType.DELETE)
    @PostMapping("/del/{deptId}")
    public AjaxResult remove(@PathVariable Long deptId) {
        // 参数校验
        if (deptId == null) {
            return AjaxResult.error("部门 ID 不能为空");
        }
        SysDept dept = deptService.selectDeptById(deptId);
        if (dept == null) {
            return AjaxResult.error("部门不存在");
        }
        // 检查是否存在下级部门
        if (deptService.hasChildByDeptId(deptId)) {
            return AjaxResult.warn("存在下级部门，不允许删除");
        }
        // 检查部门是否存在用户
        if (deptService.checkDeptExistUser(deptId)) {
            return AjaxResult.warn("部门存在用户，不允许删除");
        }
        // 检查数据范围权限
        deptService.checkDeptDataScope(deptId);
        // 删除部门
        return toAjax(deptService.deleteDeptById(deptId));
    }
}
